Add source field, UI filter, and import mapping

Introduce a 'source' property across types and API models, include it in convertApiToMedia, and add a Source input to AddMediaView. Add source-based filtering in BrowseView (dropdown + tag icon) and ensure Clear Filters resets source. Update playnite, stashapp, and xbvr importers to set source conditionally using a new SOURCE_CATEGORY_MAPPING constant (added to types) so sources are only applied for appropriate media categories.

src/api.ts

@@ -43,6 +43,7 @@ export interface ApiMediaItem {
   director: string | null;
   writer: string | null;
   releaseDate: string | null;
+  source?: string | null;
   createdAt: string;
   updatedAt: string;
   genres?: string[];
@@ -53,7 +54,6 @@ export interface ApiMediaItem {
   platforms?: string[];
   developers?: string[];
   completionStatus?: string;
-  source?: string;
   playCount?: number;
   lastActivity?: string | null;
   playtime?: number;
@@ -87,6 +87,7 @@ export interface CreateMediaInput {
   director?: string | null;
   writer?: string | null;
   releaseDate?: string | null;
+  source?: string | null;
   genres?: string[];
   tags?: string[];
   studios?: string[];
@@ -309,6 +310,7 @@ export function convertApiToMedia(apiItem: ApiMediaItem): Media {
     tags: apiItem.tags || [],
     studios: apiItem.studios,
     type: mediaType,
+    source: apiItem.source || undefined,
     status: mediaStatus,
     staff: staff.length > 0 ? staff : undefined,
     aspectRatio: aspectRatio,
@@ -316,7 +318,6 @@ export function convertApiToMedia(apiItem: ApiMediaItem): Media {
     platforms: apiItem.platforms,
     developers: apiItem.developers,
     completionStatus: apiItem.completionStatus,
-    source: apiItem.source,
     playCount: apiItem.playCount,
     lastActivity: apiItem.lastActivity,
     playtime: apiItem.playtime